1. Question:
There are pom files in the project but no maven
reason:
It's because the project failed to identify the pom file, and we need to manually add maven's main pom file.
solution:
Double-click the shift button in the project to enter the file search function, and then search for maven.
Then click Add Maven Project to add the maven main configuration file, and then wait for compilation.
2. Reimport project & clear cache
Right-click your project->maven (compare the options below)->reimport->wait for completion
